Table 1: Diagnosed types of GDDs according to the classification of DSM-IV-TR .
|Global developmental disturbances||Characteristics|
|Autistic Disturbances*||Classic autismo|
|Rett Syndrome||Genetic condition (mutations in MECP2 gene). It mainly affects girls and reaches post-natal brain development.|
|Child Disintegrative Disorder||Cognitive, behavioural and speech regression of 2-10 years, preceded by fully normal development, and with posterior appearance of autistic characteristics.|
|Asperger Disturbance*||Individuals with one autistic characteristics that develop speech in expected age, without mental retardation.|
|Global Disturbance of non-specified Development*||Individuals with some autistic characteristics, but not as severe or extensive that do not belong to any other categories.|
*Together, also called Autism Spectrum Disorders (ASDs).